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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Splitting 40G Ports without Reload

You can split 40G interfaces into 10G ports without reboot. You can also combine the split ports to create a 40G port without reload.

  • The switch consists of six 40G ports (49,50,51,52,53,54) that can be split into 10G ports.
  • In stacking, configure profile first before provisioning for new units. Otherwise it is mandatory to reload for profile to take effect.

  • If there is a mismatch in fan-out profile between master and the new member in stacking, the master re-configures the member with its quad-mode profile, quad-mode, and stack-group configuration and then reset the member. To avoid stack split during profile mismatch, the master does stack group configurations of the new member.

To configure the quad-port-profile, use the following command:

CONFIGURATION mode

stack-unit stack-unit number port port-number portmode quad

The defaults ports are:

49,50,51,52,53,54

To display the Fan-out capability profile, use the following show command:

show system stack-unit stack-unit number fanout configured
Example of the show Command

The following example shows the show system stack-unit stack-unit number fanout configured command.

Dell#show system stack-unit 1 fanout configured
Configured fan out ports in stack-unit 1
        Configured         Present
           49              49
           50              50
           51              51
           52              52
           53              53
           54              54

The following example shows the interface status before splitting a 40G interface:

Dell#show interfaces status
Port                 Description  Status Speed        Duplex Vlan
Fo 1/49                           Down   40000 Mbit   Auto   --
Fo 1/50                           Down   40000 Mbit   Auto   --

The following example shows splitting a 40G interface:

Dell(conf)#stack-unit 1 port 49 portmode quad
Warning: Enabling Quad mode on stack-unit 1 port 49. Please verify whether the configs related to interface Fo 1/49  are cleaned up before proceeding further.
[confirm yes/no]:yes
Quad mode is enabled on stack-unit 1 port 49
Dell(conf)#Jan 1 13:37:01: %STKUNIT1-M:CP %IFMGR-5-DYNAMIC_FANOUT: Port 49 in slot 1 has been fanned-out 
TenGigabitEthernet 1/49/1     unassigned      NO  Manual administratively down down
TenGigabitEthernet 1/49/2     unassigned      NO  Manual administratively down down
TenGigabitEthernet 1/49/3     unassigned      NO  Manual administratively down down
TenGigabitEthernet 1/49/4     unassigned      NO  Manual administratively down down 

The following example shows the split interfaces:

Dell#show interfaces status
Port                 Description  Status Speed        Duplex Vlan
Te 1/49/1                         Down   10000 Mbit   Auto   --
Te 1/49/2                         Down   10000 Mbit   Auto   --
Te 1/49/3                         Down   10000 Mbit   Auto   --
Te 1/49/4                         Down   10000 Mbit   Auto   --
Te 1/50/1                         Down   10000 Mbit   Auto   --
Te 1/50/2                         Down   10000 Mbit   Auto   --
Te 1/50/3                         Down   10000 Mbit   Auto   --
Te 1/50/4                         Down   10000 Mbit   Auto   --
Te 1/51/1                         Down   10000 Mbit   Auto   --
Te 1/51/2                         Down   10000 Mbit   Auto   --
Te 1/51/3                         Down   10000 Mbit   Auto   --
Te 1/51/4                         Down   10000 Mbit   Auto   --
Te 1/52/1                         Down   10000 Mbit   Auto   --
Te 1/52/2                         Down   10000 Mbit   Auto   --
Te 1/52/3                         Down   10000 Mbit   Auto   --
Te 1/52/4                         Down   10000 Mbit   Auto   --
Te 1/53/1                         Down   10000 Mbit   Auto   --
Te 1/53/2                         Down   10000 Mbit   Auto   --
Te 1/53/3                         Down   10000 Mbit   Auto   --
Te 1/53/4                         Down   10000 Mbit   Auto   --
Te 1/54/1                         Down   10000 Mbit   Auto   --
Te 1/54/2                         Down   10000 Mbit   Auto   --
Te 1/54/3                         Down   10000 Mbit   Auto   --
Te 1/54/4                         Down   10000 Mbit   Auto   --

The physical port is not present in the show inventory media command output:

Dell#show inventory media
Slot   Port     Type        Media               Serial Number        Dell Qualified
-----------------------------------------------------------------------------------
   1   49/1     QSFP        4x10GBASE-CR1-3M      CN027GG536409H3      Yes
   1   49/2     QSFP        4x10GBASE-CR1-3M      CN027GG536409H3      Yes
   1   49/3     QSFP        4x10GBASE-CR1-3M      CN027GG536409H3      Yes
   1   49/4     QSFP        4x10GBASE-CR1-3M      CN027GG536409H3      Yes

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